Python 2

N = int(raw_input())

for _ in xrange(N):
    a, b = map(int, raw_input().split())
    print a + b

Python 3

N = int(input())

for _ in range(N):
    a, b = map(int, input().split())
    print(a + b)

Java

import java.util.*;

public class APlusB {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        int N = in.nextInt();
        for (int i = 0; i < N; i++) {
            int a = in.nextInt();
            int b = in.nextInt();
            System.out.println(a + b);
        }
    }
}

C++

#include <iostream>

using namespace std;

int main() {
    int N;
    cin >> N;

    for (int i = 0; i < N; i++) {
        int a, b;
        cin >> a >> b;
        cout << a + b << endl;
    }
}

C

#include <stdio.h>

int main() {
    int N;
    scanf("%d\n", &N);

    for (int i = 0; i < N; i++) {
        int a, b;
        scanf("%d %d\n", &a, &b);
        printf("%d\n", a + b);
    }
}

JS

print(...): similar to Python's print, prints all argument separated by space followed by new line.
flush(): flushes stdout, ensuring everything output by print() immediately shows up.
gets(): similar to the Ruby equivalent, returns one line of input from stdin.
read(bytes): read bytes bytes from stdin as an ArrayBuffer.
write(buffer): write a typed array, ArrayBuffer, or a view of ArrayBuffer to stdout.
quit(code): exits the program with code.
You can also assign to the global variable autoflush to control whether print() flushes.

Welcome to the NCCSOFT CONTEST!

print('Hello, World!')

You can get started by checking out this problem we've added for you.